CN115195638A - Vehicle power supply control device - Google Patents
Vehicle power supply control device Download PDFInfo
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- CN115195638A CN115195638A CN202210345158.7A CN202210345158A CN115195638A CN 115195638 A CN115195638 A CN 115195638A CN 202210345158 A CN202210345158 A CN 202210345158A CN 115195638 A CN115195638 A CN 115195638A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
A vehicle power supply control device (100) includes: a vehicle speed information input unit (10) configured to receive vehicle speed information; a power supply information input unit (20) configured to receive start/stop information of power supply; a control unit (30) configured to output instruction information related to supply of electric power based on vehicle speed information and start/stop information; an output instruction unit (40) configured to receive the instruction information and output an ON-signal or an OFF-signal to the power supply relay; and a latch unit (50) configured to continuously output the ON instruction information to the output instruction unit in response to input of the ON signal. When start/stop information is input while the vehicle speed indicated in the vehicle speed information is zero, the latch unit (50) stops continuously outputting the ON command information.
Description
Technical Field
The present invention relates to a vehicle power supply control device that controls supply of an ignition power supply (ignition power) of a vehicle.
Background
In the related art, there is known a technique for continuously supplying an ignition power supply in response to an erroneous operation of an ignition key or an ignition switch of a running vehicle (i.e., an erroneous supply stop operation of the ignition power supply). For example, patent document 1 discloses a device for controlling start/stop of an engine to avoid an unintentional engine stop by a driver when a vehicle is running, and to enable an emergency stop of the engine even in a case where the vehicle is running when the vehicle is abnormal. The control device controls the relay not to be turned off while the vehicle is running, even if an abnormality occurs in the microprocessor that is executed based on the software logic and an off command is output to the ignition relay.
Further, there is known a technique for continuously supplying electric power (power) even in the case where an erroneous operation is performed when information required for control or an abnormality occurs in the control apparatus itself. For example, patent document 2 discloses a vehicle control apparatus capable of improving convenience for a user when a vehicle is stopped, while preventing a drive source from being stopped by an erroneous operation of a push switch when the vehicle is running, even when an abnormality occurs in a running determination signal such as vehicle speed information. The vehicle control apparatus allows the drive source to be started/stopped by a normal pressing operation of an ignition switch when the vehicle is stopped, and controls to prohibit control to stop the drive source by the normal pressing operation of the ignition switch and allow control to stop the drive source by a special pressing operation of the ignition switch when the vehicle is running.
Further, patent document 3 discloses an engine control device capable of maintaining a driving state of an engine without stopping when a failure occurs in a microcomputer or the like of the control device. The control means controls the engine to stop or drive using two signals from the determination means including two input determination means and an input signal from the travel detection means. Therefore, even in the case where the input determining means or the travel detecting means has failed, the engine can maintain the driving state.
Patent document 1: JP-A-2007-263020
Patent document 2: JP-A-2015-116911
Patent document 3: JP-A-2009-248743
Disclosure of Invention
It is very important to continue the safe running of the vehicle even if the user accidentally performs an operation (a press start/stop switch operation) of stopping the supply of the ignition power supply when an abnormality occurs in the control device during the running of the vehicle.
The present invention has been made in view of such circumstances, and provides a vehicular electric power source control apparatus that reliably continues electric power supply to a vehicle so as to allow the vehicle to continue to run safely, even if a user accidentally performs an operation of stopping supply of an ignition electric power source when an abnormality occurs in the control apparatus during running of the vehicle.
To solve these problems, there is provided a vehicle electric power source control device configured to control supply of an ignition electric power source of a vehicle, the vehicle electric power source control device including: a vehicle speed information input unit configured to receive vehicle speed information; a power supply information input unit configured to receive start/stop information of power supply; a control unit configured to output instruction information on supply of the ignition power source based on vehicle speed information input to the vehicle speed information input unit and start/stop information input to the electric power supply information input unit; an output instruction unit configured to receive the instruction information output by the control unit and output an ON-signal or an OFF-signal to a power supply relay of the ignition power supply; and a latch unit configured to continuously output the ON instruction information to the output instruction unit in response to an input of the ON signal output by the output instruction unit. The latch unit is configured to receive vehicle speed information input to the vehicle speed information input unit and start/stop information input to the power supply information input unit, and in a case where the start/stop information is input while a vehicle speed indicated in the vehicle speed information is zero, the latch unit stops continuously outputting the on-instruction information.
Therefore, the latch unit continuously outputs the ON instruction information once the ON signal is input, and stops outputting the ON instruction information based ON the information that the vehicle speed is zero and the start/stop information that are input without via the control unit. Therefore, it is possible to provide a vehicular electric power source control device capable of reliably continuing electric power supply to a vehicle so as to allow the vehicle to continue to run safely and stopping supply of ignition electric power when safety can be ensured, even if a user accidentally performs an operation of stopping supply of ignition electric power when an abnormality occurs in the control device during running of the vehicle.
To solve these problems, there is provided a vehicle electric power source control device configured to control supply of an ignition electric power source of a vehicle, the vehicle electric power source control device including: a vehicle speed information input unit configured to receive vehicle speed information; a power supply information input unit configured to receive start/stop information of power supply; a first control unit configured to output instruction information on supply of the ignition power source based on vehicle speed information input to the vehicle speed information input unit and start/stop information input to the electric power supply information input unit; a second control unit configured to output instruction information on supply of the ignition power source by a method different from that of the first control unit, based on the vehicle speed information input to the vehicle speed information input unit and the start/stop information input to the electric power supply information input unit; a first output instruction unit configured to receive the instruction information output by the first control unit and output an ON-ON signal or an OFF-OFF signal to a power supply relay of the ignition power supply; a second output instruction unit configured to receive the instruction information output by the second control unit and output an ON signal or an OFF signal to a power supply relay of the ignition power supply; a first latch unit configured to continuously output the ON instruction information to the first output instruction unit in response to an input of the ON signal output by the first output instruction unit; and a second latch unit configured to continuously output the ON instruction information to the second output instruction unit in response to an input of the ON signal output by the second output instruction unit. The first latch unit is configured to receive vehicle speed information input to the vehicle speed information input unit and start/stop information input to the power supply information input unit, and in a case where the start/stop information is input while the vehicle speed indicated in the vehicle speed information is zero, the first latch unit stops continuously outputting the on instruction information, and the second latch unit is configured to receive the vehicle speed information input to the vehicle speed information input unit and the start/stop information input to the power supply information input unit, and in a case where the start/stop information is input while the vehicle speed indicated in the vehicle speed information is zero, the second latch unit stops continuously outputting the on instruction information.
Therefore, the latch unit and the output instruction unit are duplexed. Therefore, it is possible to provide a vehicular electric power source control device that more reliably continues electric power supply to a vehicle so as to allow the vehicle to continue traveling safely, and that stops supply of ignition electric power when safety can be ensured.
As described above, according to the present invention, it is possible to provide a vehicular electric power source control apparatus capable of reliably continuing the supply of electric power to a vehicle so as to allow the vehicle to continue to run safely, even if a user accidentally performs an operation of stopping the supply of ignition electric power when an abnormality occurs in the control apparatus during running of the vehicle.
Drawings
Fig. 1 is a block diagram of the configuration of a vehicular electric power source controller according to a first embodiment of the invention;
fig. 2 is a flowchart illustrating a process flow of the vehicular electric power source controller according to the first embodiment of the invention;
fig. 3 is a block diagram of the configuration of a vehicular electric power source controller according to a second embodiment of the invention; and
fig. 4 is a timing chart of control of the vehicular electric power source controller according to the second embodiment of the invention.
Detailed Description
Hereinafter, embodiments of a vehicular electric power source controller according to the invention will be described with reference to the drawings.
< first embodiment >
A vehicular electric power source control apparatus 100 in a first embodiment will be described with reference to fig. 1 and 2. The vehicle power supply control device 100 controls the supply of the ignition power supply by outputting a command to the power supply relay 70 of the ignition power supply of the vehicle. The vehicle power supply control device 100 includes: a vehicle speed information input unit 10; a power supply information input unit 20; a control unit 30, the control unit 30 outputting instruction information on supply of the ignition power source based on the input information; an output instruction unit 40 that outputs an ON (ON)/OFF (OFF) signal to the power supply relay 70 based ON the instruction information by the output instruction unit 40; a latch unit 50, the latch unit 50 continuously outputting the ON instruction information to the output instruction unit 40 by the input of the ON signal; and a control monitoring unit 60, the control monitoring unit 60 constantly monitoring the control unit 30.
The vehicle speed information input unit 10 transmits a traveling speed of the vehicle from an Electronic Control Unit (ECU) that acquires speed information of the vehicle on the ground according to a rotation direction or a rotation speed of an axle, and receives the vehicle speed information. The power supply information input unit 20 transmits operation information from an ECU that detects an ignition switch operation (so-called press start/stop switch operation), and receives information in which the press start/stop switch is operated as start/stop information of power supply.
The control unit 30 outputs instruction information on the supply of the ignition power source based on the vehicle speed information input to the vehicle speed information input unit 10 and the start/stop information input to the electric power supply information input unit 20. The control unit 30 acquires information on whether the vehicle is stopped or running as vehicle speed information. In addition, the control unit 30 acquires information on whether the vehicle is stopped or running as the power supply start information/power supply stop information of the ignition power source, and at the same time acquires the information as the information that the press start/stop switch is operated.
When the vehicle stops, the control unit 30 detects that the press start/stop switch operation information is transmitted as the power supply start information while the power supply is stopped, and outputs on instruction information indicating the start of the power supply to the output instruction unit 40. Further, when the vehicle is stopped, the control unit 30 detects that the start/stop switch operation information is pressed while power is being supplied as power supply stop information, and outputs disconnection instruction information indicating that power supply is stopped to the output instruction unit 40. However, when the vehicle is running, even if the push start/stop switch operation information is transmitted while power is being supplied, the control unit 30 does not detect that the push start/stop switch operation information is transmitted as the power supply stop information, and the control unit 30 does not output the off instruction information indicating that the supply of power is stopped to the output instruction unit 40. As a result, even if the press start/stop switch is accidentally operated during traveling, electric power can be continuously supplied.
The control unit 30 is composed of a so-called Microprocessor (MCU). The control unit 30 periodically transmits a predetermined signal (watchdog timer, WDT) to the control monitor unit 60. If the control monitoring unit 60 does not receive a signal for a certain period of time, or conversely, if the control monitoring unit 60 receives a plurality of signals, the control unit 30 applies a Reset signal (Reset) from the control monitoring unit 60, assuming that an abnormality such as a stop or runaway occurs. The control unit 30 to which the reset signal is input is forcibly restarted to be recovered.
The output instruction unit 40 receives instruction information output by the control unit 30, and outputs an ON signal or an OFF signal to the power supply relay 70 of the ignition power supply based ON the instruction information. The output instruction unit 40 outputs an ON signal to the power supply relay 70 when ON instruction information indicating that power supply is started is input from the control unit 30, and the output instruction unit 40 outputs an OFF signal to the power supply relay 70 when OFF instruction information indicating that power supply is stopped is input from the control unit 30. In the first embodiment, the output instruction unit 40 receives instruction information from the control unit 30 via communication. The communication method and protocol are not particularly limited. The transmission of the instruction information between the output instruction unit 40 and the control unit 30 is not limited via communication, and may be directly performed by a signal line.
The latch unit 50 directly receives the vehicle speed information input to the vehicle speed information input unit 10 and the start/stop information input to the power supply information input unit 20 without via the control unit 30. In addition, the latch unit 50 receives the instruction information output by the output instruction unit 40. When the instruction information output by the output instruction unit 40 is an ON signal for turning ON the power supply relay 70, the latch unit 50 latches (holds) the ON signal and continuously outputs the ON instruction information to the output instruction unit 40. The latch unit 50 is constituted by, for example, a latch circuit capable of holding one bit of information (two states of on and off).
Based on the input vehicle speed information and the power supply start/stop information, when the start/stop information is input while the vehicle speed indicated in the vehicle speed information is zero, the latch unit 50 stops continuously outputting the on instruction information. Thus, once the latch unit 50 receives the ON signal, the ON instruction information is continuously output to the output instruction unit 40, and the output instruction unit 40 thus continuously outputs the ON signal to the power supply relay 70. Further, when the latch unit 50 is supplied with information that the vehicle speed is zero and start/stop information that the press start/stop switch is operated, which are input not via the control unit 30, the latch unit 50 stops outputting the on instruction information.
Therefore, it is possible to provide a vehicular electric power source control apparatus 100 that reliably continues electric power supply to the vehicle so as to allow the vehicle to continue to run safely and stops supply of ignition electric power when safety is ensured, even if the user accidentally performs an operation to stop supply of ignition electric power when an abnormality occurs in the control unit 30 during running of the vehicle. Due to the abnormality, even if the reset signal is applied, the control unit 30 may take a long time to restart and may not be able to recover. However, even when such an abnormality occurs in the control unit 30, the ON instruction information is continuously output to the output instruction unit 40 once the latch unit 50 receives the ON signal, and the vehicle speed information and the start/stop information are directly acquired. Therefore, the vehicle power supply control device 100 of the present invention can safely continue running the vehicle and normally cut off the power of the vehicle at the time of stop.
Referring to fig. 2, a process flow of the vehicular electric power source controller 100 will be described. In addition, S in the flowchart indicates a step. The power of the vehicle is in the off state, and the vehicle stops. In S100, the vehicle power supply control device 100 detects whether the press start/stop switch is operated in this state. When the push start/stop switch is operated, information indicating that the push start/stop switch is operated is input to the power supply information input unit 20, in S102, the control unit 30 outputs ON instruction information to the output instruction unit 40, the output instruction unit 40 outputs an ON signal to the power supply relay 70, and the vehicle is turned ON. If the output instruction unit 40 outputs the ON signal, the latch unit 50 latches the ON signal in S104, and continues to output the ON instruction information to the output instruction unit 40.
The control unit 30 detects whether the vehicle is running based on the vehicle speed information from the vehicle speed information input unit 10 in S106. When the vehicle is running, the latch unit 50 continues to latch the ON signal in S110. When the vehicle is stopped, the control unit 30 detects whether the press start/stop switch is operated from the power supply information input unit 20 in S108. When the press start/stop switch is not operated, the latch unit 50 continues to latch the ON signal in S110. When the push start/stop switch is operated, that is, when the push start/stop switch is operated while the vehicle is stopped, the latch unit 50 ends the latching of the ON signal and outputs the OFF signal in S112.
Thereafter, in S114, the control unit 30 confirms whether it is detected from the power supply information input unit 20 that the press start/stop switch is operated. When it is not detected that the press start/stop switch is operated, S106 to S112 are repeated. As a result, when the control unit 30 does not detect that the power is disconnected and control is not performed, the latch unit 50 latches the ON signal again in S110. When detecting that the press start/stop switch is operated, the control unit 30 outputs the off instruction information to the output instruction unit 40. As a result, the output instruction unit 40 outputs the OFF signal to the power supply relay 70, and the power of the vehicle is turned OFF.
< second embodiment >
A vehicle power supply control device 100A of a second embodiment will be described with reference to fig. 3 and 4. To avoid repetitive description, the same configuration elements as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof will be omitted. The vehicle power supply control device 100A includes: a vehicle speed information input unit 10; a power supply information input unit 20; a control unit 30A (first control unit), the control unit 30A outputting instruction information on supply of the ignition power source based on the input information; a control unit 30B (second control unit), the control unit 30B outputting instruction information by a method different from that of the control unit 30A; an output instruction unit 40A (first output instruction unit), the output instruction unit 40A outputting an ON (ON)/OFF (OFF) signal to the power supply relay 70 based ON the instruction information output by the control unit 30A; an output instruction unit 40B (second output instruction unit), the output instruction unit 40B outputting an ON/OFF signal to the power supply relay 70 based ON the instruction information output by the control unit 30B; a latch unit 50A (first latch unit), the latch unit 50A continuously outputting the ON instruction information to the output instruction unit 40A by inputting the ON signal output by the output instruction unit 40A; a latch unit 50B (second latch unit), the latch unit 50B continuously outputting the ON instruction information to the output instruction unit 40B by inputting the ON signal output by the output instruction unit 40B; and a control monitoring unit 60, the control monitoring unit 60 constantly monitoring the control units 30A and 30B.
In the second embodiment, the control units 30A and 30B are constituted by one microprocessor, but the present invention is not limited thereto, and each of the control unit 30A and the control unit 30B may be constituted by one microprocessor. As in the above-described embodiment, the control unit 30A transmits the instruction information to the output instruction unit 40A by communication. The control unit 30B is directly connected to the output instruction unit 40B through a signal line instead of communication, and transmits instruction information to the output instruction unit 40B by a method different from that of the control unit 30A. As a result, duplexing is achieved between the control unit 30A and the output instruction unit 40A and between the control unit 30B and the output instruction unit 40B.
The control units 30A and 30B output instruction information on the supply of the ignition power source based on the vehicle speed information input to the vehicle speed information input unit 10 and the start/stop information input to the electric power supply information input unit 20.
When the vehicle stops, the control unit 30A detects that the press start/stop switch operation information is transmitted as the power supply start information while the power supply is stopped, and outputs on instruction information indicating the start of the power supply to the output instruction unit 40A. When the vehicle stops, the control unit 30B detects that the press start/stop switch operation information is transmitted as the power supply start information while the power supply is stopped, and outputs on instruction information indicating the start of the power supply to the output instruction unit 40B.
Further, when the vehicle is stopped, the control unit 30A detects that the start/stop switch operation information is pressed while power is being supplied as power supply stop information, and outputs disconnection instruction information indicating that power supply is stopped to the output instruction unit 40A. When the vehicle stops, the control unit 30B detects that the push start/stop switch operation information is transmitted as the electric power supply stop information while electric power is being supplied, and outputs the off instruction information indicating that the supply of electric power is stopped to the output instruction unit 40B.
However, when the vehicle is running, even if the push start/stop switch operation information is transmitted while power is being supplied, the control unit 30A does not detect that the push start/stop switch operation information is transmitted as power supply stop information, and does not output the off instruction information indicating that the supply of power is stopped to the output instruction unit 40A. Further, when the vehicle is running, even if the push start/stop switch operation information is transmitted while power is being supplied, the control unit 30B does not detect that the push start/stop switch operation information is transmitted as the power supply stop information, and does not output the off instruction information indicating that the supply of power is stopped to the output instruction unit 40B. As a result, even if the press start/stop switch is accidentally operated during traveling, electric power can be continuously supplied.
The output instruction unit 40A receives the instruction information output by the control unit 30A, and outputs an ON signal or an OFF signal to the power supply relay 70 of the ignition power supply based ON the instruction information. When the output instruction unit 40A receives ON instruction information indicating that the supply of electric power is started from the control unit 30A, the output instruction unit 40A outputs an ON signal to the power supply relay 70, and when the output instruction unit 40A receives OFF instruction information indicating that the supply of electric power is stopped from the control unit 30A, the output instruction unit 40A outputs an OFF signal to the power supply relay 70. The output instruction unit 40B receives the instruction information output by the control unit 30B, and outputs an ON signal or an OFF signal to the power supply relay 70 of the ignition power supply based ON the instruction information. When the output instruction unit 40B receives ON instruction information indicating the start of supply of electric power from the control unit 30B, the output instruction unit 40B outputs an ON signal to the power supply relay 70, and when the output instruction unit 40B receives OFF instruction information indicating the stop of supply of electric power from the control unit 30B, the output instruction unit 40B outputs an OFF signal to the power supply relay 70.
The latch units 50A and 50B directly receive the vehicle speed information input to the vehicle speed information input unit 10 and the start/stop information input to the power supply information input unit 20 without via the control units 30A and 30B. In addition, the latch unit 50A receives the instruction information output by the output instruction unit 40A. The latch unit 50B receives the instruction information output by the output instruction unit 40B. When the instruction information output by the output instruction unit 40A is an ON signal for turning ON the power supply relay 70, the latch unit 50A latches the ON signal and continuously outputs the ON instruction information to the output instruction unit 40A. When the instruction information output by the output instruction unit 40B is an ON signal for turning ON the power supply relay 70, the latch unit 50B latches the ON signal and continuously outputs the ON instruction information to the output instruction unit 40B.
Based on the input vehicle speed information and power supply start/stop information, in the case where start/stop information is input in the vehicle speed information when the vehicle speed is zero, the latch units 50A and 50B stop continuously outputting the on instruction information. In this way, once the latch unit 50A or 50B receives the ON signal, the latch unit 50A or 50B continuously outputs the ON instruction information to the output instruction unit 40A or 40B, and the output instruction unit 40A or 40B thus continuously outputs the ON signal to the power supply relay 70. Further, in the case where the latch unit 50A or 50B is supplied with information that the vehicle speed is zero and start/stop information that the press start/stop switch is operated, which are input not via the control unit 30A or 30B, the latch unit 50A or 50B stops outputting the on instruction information.
As described above, the system of the control unit 30A, the output instruction unit 40A, and the latch unit 50A and the system of the control unit 30B, the output instruction unit 40B, and the latch unit 50B are completely separated and duplexed. When an abnormality does not occur in one system (e.g., the control unit 30A) but occurs in another system (e.g., the control unit 30B), the output instruction unit 40B in the other system continuously outputs an ON signal to the power supply relay 70, so that the supply of electric power to the vehicle can be reliably continued in order to allow the vehicle to continue to run safely. In addition, even if an abnormality occurs in only one system, safety can be ensured in the case where information that the vehicle speed is zero and start/stop information that the press start/stop switch is operated are provided. Therefore, the supply of the ignition power source can be stopped by stopping the output of the on command information in both systems.
Referring to fig. 4, the operation of each unit when the control unit 30 is normal and when an abnormality occurs in the control unit 30 will be described. In fig. 4, a case where the control unit 30A or 30B is a single control unit 30 will be described. In normal operation, if the push start/stop switch is operated when the vehicle is stopped and the power of the vehicle is turned off (the power supply relay 70 is turned off), information indicating that the push start/stop switch is operated (i.e., information indicating that the ignition power supply is turned on) is transmitted to the control unit 30 via the power supply information input unit 20. Then, the control unit 30 outputs the on instruction information with a slight delay (because it is driven at a predetermined clock cycle).
When the control unit 30 outputs the on instruction information, the on instruction information is sent to the output instruction units 40A and 40B via the communication and signal lines. Then, the output instruction unit 40A outputs an ON signal, which is transmitted to the latch unit 50A and the power supply relay 70 without delay, the latch unit 50A latches the ON signal, and the power supply relay 70 is turned ON. Similarly, the output instruction unit 40B outputs an ON signal, which is transmitted to the latch unit 50B and the power supply relay 70 without delay, the latch unit 50B latches the ON signal, and the power supply relay 70 is turned ON.
When the vehicle runs and then stops again, and at this time, the press start/stop switch is operated, information indicating that the press start/stop switch is operated (i.e., information indicating that the ignition power supply is to be turned off at this time) is transmitted to the control unit 30 via the power supply information input unit 20. Then, the control unit 30 similarly outputs the off instruction information with a slight delay, and the off instruction information is sent to the output instruction units 40A and 40B. The output instruction units 40A and 40B output OFF signals, which are sent to the power supply relay 70, and the power supply relay 70 is turned OFF. Since the latch units 50A and 50B receive the information indicating that the press start/stop switch is operated through the signal line without via the control unit 30, the latch units 50A and 50B stop outputting the on instruction information without delay.
A case where an abnormality occurs in the control unit 30 will be described. If the press start/stop switch is operated when the vehicle is stopped and the power of the vehicle is turned off, the control unit 30 similarly outputs the on instruction information with a slight delay. Therefore, until the output instruction unit 40A or 40B outputs the ON signal, the latch unit 50A or 50B latches the ON signal, and the power supply relay 70 is turned ON, as in the normal operation. In the present embodiment, it is assumed that an abnormality occurs in the control unit 30 while the vehicle is running, and therefore the control unit 30 cannot output a signal for turning on the power supply. Even in this case, the latch units 50A and 50B continuously output the on instruction information to the output instruction units 40A and 40B, respectively. Therefore, the ON signal is output from the output instruction units 40A and 40B, and the power supply relay 70 continuously maintains the ON state.
Further, when the press start/stop switch is operated in this state, the latch units 50A and 50B directly receive the information indicating that the press start/stop switch is operated from the power supply information input unit 20, not via the control unit 30 in which an abnormality occurs. Even in this case, the latch units 50A and 50B receive the vehicle speed information directly from the vehicle speed information input unit 10 without via the control unit 30 in which the abnormality occurs, and thus can detect that the vehicle is running from this information. Therefore, the latch units 50A and 50B continuously output the on instruction information to the output instruction units 40A and 40B, respectively. Therefore, the power supply relay 70 continuously maintains the on state.
Thereafter, when the vehicle is stopped, and at this time, the press start/stop switch is operated, the information indicating that the ignition power is turned off from the power supply information input unit 20 and the information that the vehicle speed is zero from the vehicle speed information input unit 10 are sent to the latch units 50A and 50B. Then, since information is not transmitted to the latch units 50A and 50B through the signal line via the control unit 30, the output instruction unit 40A or 40B and the power supply relay 70 are turned off without delay.
Therefore, it is possible to provide a redundant vehicular electric power source control apparatus 100A that reliably continues supply of electric power to the vehicle so as to allow the vehicle to continue running safely and stops supply of ignition electric power when safety can be ensured, even if the user accidentally performs an operation for stopping supply of ignition electric power when an abnormality occurs in the control unit 30 during running of the vehicle.
It should be noted that the present invention is not limited to the illustrated embodiments, and can be implemented with a configuration in the range that does not depart from the content recited in each part of the claims. That is, the present invention is mainly and specifically illustrated and described with respect to specific embodiments, and those skilled in the art may make various modifications with respect to the above-described embodiments in terms of number and other detailed configurations without departing from the scope of the technical idea and purpose of the present invention.
Claims (2)
1. A vehicular electric power source control device configured to control supply of an ignition electric power source of a vehicle, comprising:
a vehicle speed information input unit configured to receive vehicle speed information;
a power supply information input unit configured to receive start/stop information of power supply;
a control unit configured to output instruction information on supply of the ignition power source based on the vehicle speed information input to the vehicle speed information input unit and the start/stop information input to the electric power supply information input unit;
an output instruction unit configured to receive the instruction information output by the control unit and output an ON-signal or an OFF-signal to a power supply relay of the ignition power supply; and
a latch unit configured to continuously output ON instruction information to the output instruction unit in response to input of the ON signal output by the output instruction unit;
wherein the latch unit is configured to receive the vehicle speed information input to the vehicle speed information input unit and the start/stop information input to the power supply information input unit, and stop continuously outputting the on instruction information in a case where the start/stop information is input while a vehicle speed indicated in the vehicle speed information is zero.
2. A vehicular electric power source control device configured to control supply of an ignition electric power source of a vehicle, comprising:
a vehicle speed information input unit configured to receive vehicle speed information;
a power supply information input unit configured to receive start/stop information of power supply;
a first control unit configured to output instruction information on supply of the ignition power supply based on the vehicle speed information input to the vehicle speed information input unit and the start/stop information input to the electric power supply information input unit;
a second control unit configured to output instruction information on supply of the ignition power source by a method different from that of the first control unit, based on the vehicle speed information input to the vehicle speed information input unit and the start/stop information input to the electric power supply information input unit;
a first output instruction unit configured to receive the instruction information output by the first control unit and output an ON-signal or an OFF-signal to a power supply relay of the ignition power supply;
a second output instruction unit configured to receive the instruction information output by the second control unit and output an ON signal or an OFF signal to the power supply relay of the ignition power supply;
a first latch unit configured to continuously output ON instruction information to the first output instruction unit in response to input of an ON signal output by the first output instruction unit; and
a second latch unit configured to continuously output ON instruction information to the second output instruction unit in response to input of the ON signal output by the second output instruction unit,
wherein the first latch unit is configured to receive the vehicle speed information input to the vehicle speed information input unit and the start/stop information input to the power supply information input unit, and in a case where the start/stop information is input while a vehicle speed indicated in the vehicle speed information is zero, the first latch unit stops continuously outputting the on instruction information, and
wherein the second latch unit is configured to receive the vehicle speed information input to the vehicle speed information input unit and the start/stop information input to the power supply information input unit, and stops continuously outputting the on instruction information in a case where the start/stop information is input while a vehicle speed indicated in the vehicle speed information is zero.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-064353 | 2021-04-05 | ||
| JP2021064353A JP2022159894A (en) | 2021-04-05 | 2021-04-05 | Vehicle power supply control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115195638A true CN115195638A (en) | 2022-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210345158.7A Pending CN115195638A (en) | 2021-04-05 | 2022-04-02 | Vehicle power supply control device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2022159894A (en) |
| CN (1) | CN115195638A (en) |
-
2021
- 2021-04-05 JP JP2021064353A patent/JP2022159894A/en active Pending
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2022
- 2022-04-02 CN CN202210345158.7A patent/CN115195638A/en active Pending
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| Publication number | Publication date |
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| JP2022159894A (en) | 2022-10-18 |
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